Super bumpy inside vagina

I noticed the inside of my vagina is super bumpy up the walls. This has happened a few times after sex, when things dry up. It's so bumpy, almost like when you get tons of goosebumps on your arm.)Is this normal? It seems to happen when I am dry down there, but now it has happened and I am not. I tried to get pictures, it was hard due to the internal aspect.